Serve's up

Carolina Wozniacki, a 19-year-old who became the first player from Denmark to reach a Grand Slam final, serves to Kim Clijsters in the U.S. Open championship match on Sunday.

Carolina Wozniacki, a 19-year-old who became the first player from Denmark to reach a Grand Slam final, serves to Kim Clijsters in the U.S. Open championship match on Sunday. (Emmanuel Dunand / AFP / Getty Images)

Carolina Wozniacki, a 19-year-old who became the first player from Denmark to reach a Grand Slam final, serves to Kim Clijsters in the U.S. Open championship match on Sunday.